PyRoot error bars with rectangles not showing on plot

Dear experts,

I’m using pyroot on lxplus7 to try to draw a stack plot with the corresponding total error shown for each bin in the plot. I’m following the plotting instructions here My problem is that when I specify "drawOpt = “E2” ", the errors don’t show up. However, when I specify "drawOpt = “E1” ", the errors show up as lines on the stack plot. I want to show the errors as boxes filled with pattern 3345. I don’t understand why I can plot the errors for the E1 option, but not for the E2 option.

Many thanks,


It is not clear which object you are plotting. Can you please post your code, thank you

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